> FL_FILP_PRIVATE locks are no longer tied to a particular PID, and are
instead
> inheritable by child processes. Report a l_pid of '-1' for these sorts of
locks
> since the pid is somewhat meaningless for them.
Hmm, I suppose in the case of a process that acquires a private lock, forks
(passing the lock to the child process) and then exits, pid would be
meaningless, but I wonder how common that case is compared to a
multi-threaded process (especially a file server) that will hold many
private locks, and not pass them to child processes (and exit)?
I.e. as a future user of this feature, I wonder if I'm going to want to know
that THESE private locks are owned by Ganesha and THOSE are owned by Samba?
Frank
> Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx>
> ---
> fs/locks.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/fs/locks.c b/fs/locks.c
> index d5fb853..8a4d4e4 100644
> --- a/fs/locks.c
> +++ b/fs/locks.c
> @@ -1889,7 +1889,7 @@ EXPORT_SYMBOL_GPL(vfs_test_lock);
>
> static int posix_lock_to_flock(struct flock *flock, struct file_lock *fl)
{
> - flock->l_pid = fl->fl_pid;
> + flock->l_pid = IS_FILP_PVT(fl) ? -1 : fl->fl_pid;
> #if BITS_PER_LONG == 32
> /*
> * Make sure we can represent the posix lock via @@ -1911,7 +1911,7
> @@ static int posix_lock_to_flock(struct flock *flock, struct file_lock
*fl) #if
> BITS_PER_LONG == 32 static void posix_lock_to_flock64(struct flock64
> *flock, struct file_lock *fl) {
> - flock->l_pid = fl->fl_pid;
> + flock->l_pid = IS_FILP_PVT(fl) ? -1 : fl->fl_pid;
> flock->l_start = fl->fl_start;
> flock->l_len = fl->fl_end == OFFSET_MAX ? 0 :
> fl->fl_end - fl->fl_start + 1;
> --
> 1.8.3.1
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-fsdevel"
in the
> body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at
> http://vger.kernel.org/majordomo-info.html
--
To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
